Re: serial/8250: Increase number of serial ports detected to 32
Hi Bastian,
On Thu, Nov 11, 2010 at 12:50:00PM +0100, Bastian Blank wrote:
> On Thu, Nov 11, 2010 at 12:22:46PM +0100, Yegor Yefremov wrote:
> > our company is developing multi port serial cards among other
> > products. The main problem is, when the customers first install this
> > devices especially those with 8 ports, they get only few ports
> > detected, cause CONFIG_SERIAL_8250_RUNTIME_UARTS is set to 4 (at least
> > by Lenny).
>
> SERIAL_8250_NR_UARTS needs to be changed first.
>
> > Serial interface is
> > still not dead in spite of new technologies. So this change is really
> > needed.
>
> Well, someone could change the 8250 driver to actually allow
> adding/removing ports on runtime, like everything else does it,
> including the whole bunch of usb-serial drivers. The the time beeing,
> there is a parameter nr_uarts.
This popped up recently on linux-arm-kernel ML:
http://thread.gmane.org/gmane.linux.ports.arm.kernel/92400/focus=93334
So it seems there is more general work to do first.
(Note, I don't know the details, I'm just trying to get the right people
in the discussion.)
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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